A JAVA program to find Fibanocci/cuberoot/square root/palindrome/factorial/odd-even/prime

A JAVA program to find Fibanocci/cuberoot/square root/palindrome/factorial/odd-even/prime.
Packages used:

1.      java.io.*                       : Provides for system input and output through data streams, serialization and the file system.

2.      javax.swing.*  : Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms.

3.      java.awt.*                    : Contains all of the classes for creating user interfaces and for painting graphics and images.

4.      java.awt.event.*          : Provides interfaces and classes for dealing with different types of events fired by AWT components

5.      java.math.*      : Provides classes for performing arbitrary-precision integer arithmetic (BigInteger) and arbitrary-precision decimal arithmetic

Classes used:

·         JFrame : Provides classes for performing arbitrary-precision integer arithmetic (BigInteger) and arbitrary-precision decimal arithmetic

·         Container        : A generic Abstract Window Toolkit(AWT) container object is a component that can contain other AWT components. Components added to a container are tracked in a list

·         JLabel  : A display area for a short text string or an image, or both

·         JButton           : An implementation of a "push" button.

·         JTextField : JTextField is a lightweight component that allows the editing of a single line of text.

Logical flow of the program:

·         A class inheriting JFrame and implementing ActionListener is created.

·         Container holds components like JLabel,JButton,JTextField.

·         According to the button clicked corresponding action is performed.

·         Result of the corresponding operation is displayed on the text field.

Important notes:

·         In all swing program the package that should be imported is “javax.swing.*”.

·         If in the program JApplet is inherited then the “init()” method is used to initialize the applet.

·         If in the program JFrame is inherited then the inheriting class’s constructor initializes the swing application.

1.If super() method is called ,it should be the first line inside the constructor.

2.Frame’s visibility and size must be set.